Provided by: gmt_4.5.11-1build1_amd64 bug


       x2sys_get - Get track listing from the x2sys track index databases


       x2sys_get  -TTAG  [  -C  ] [ -D ] [ -E ] [ -Fflags ] [ -L[list] ] [ -Nflags ] [ -Qe|i ]  [
       -Rwest/east/south/north[r] ] [ -V ] ]


       x2sys_get will return the names of the track data files in the x2sys data  base  for  this
       TAG  that  match  the given requirements.  You may choose a specific region and optionally
       ask only for tracks that meet certain data criteria.  Finally, you may select an option to
       list all possible pairs that might generate crossovers.

       -T     Specify the x2sys TAG which tracks the attributes of this data type.


       No space between the option flag and the associated arguments.

       -C     Instead  of reporting the track names, just output the coordinates of the center of
              each bin that has at least one track with the specified data.

       -D     Only report the track names [Default adds the availability of data for each field].

       -E     Append the file extension to all reported tracks [no extension].

       -F     Give a comma-separated list of column names (as described in the  definition  file)
              that  should  all  be present within the selected region. [Default selects all data
              columns].  A track will be included in the  returned  list  if  at  least  one  bin
              reports that the track has all of the listed columns.

       -L     Crossover  mode.   Return a list of track pairs that should be checked for possible
              crossovers.  The list is determined from the bin-index data base on the  assumption
              that  tracks  occupying  the  same bin are very likely to intersect.  By default we
              return all possible pairs in the data base.  Append the name of a file with a  list
              of  tracks if you want to limit the output to those pairs that involve at least one
              of the track names in your list.  The output is  suitable  for  the  -K  option  in

       -N     Give  a  comma-separated list of column names (as described in the definition file)
              that all must be absent.  A track will be excluded from the  returned  list  if  at
              least one bin reports that the track some all of the listed columns.

       -Q     Append  e  for  external  COEs  only,  and i for internal COEs only [Default is all
              COEs].  This applies to the crossover setup only and requires -L.

       -R     west, east, south, and north specify the Region of interest, and  you  may  specify
              them  in  decimal  degrees  or  in [+-]dd:mm[][W|E|S|N] format.  Append r if
              lower left and upper right map coordinates are given instead of w/e/s/n.   The  two
              shorthands  -Rg  and  -Rd stand for global domain (0/360 and -180/+180 in longitude
              respectively, with -90/+90 in latitude). Alternatively,  specify  the  name  of  an
              existing grid file and the -R settings (and grid spacing, if applicable) are copied
              from the grid.  For Cartesian data  just  give  xmin/xmax/ymin/ymax.   This  option
              limits the tracks to those that fall at least partly inside the specified domain.

       -V     Selects  verbose  mode,  which  will  send progress reports to stderr [Default runs


       To find all the tracks associated with the tag  MGD77,  restricted  to  occupy  a  certain
       region in the south Pacific, and have at least free air anomalies and bathymetry, try

       x2sys_get -V -T MGD77 -R 180/240/-60/-30 -F faa,depth

       To find all the tracks associated with the tag MGD77 that have depth but not twt, try

       x2sys_get -V -T MGD77 -F depth -N twt

       To  find  all the pairs associated with the tag MGD77 that might intersect each other, but
       only those pairs which involves tracks in your list new.lis, try

       x2sys_get -V -T MGD77 -L new.lis > xpairs.lis


       The tracks that are returned all have the requested data (-F) within the specified  region
       (-R).   Furthermore,  the columns of Y and N for other data types also reflect the content
       of the track portion within the selected region.


       x2sys_binlist(1),   x2sys_cross(1),   x2sys_datalist(1),   x2sys_init(1),   x2sys_list(1),
       x2sys_put(1), x2sys_report(1), x2sys_solve(1)